Everyone needs to do their personal part in helping the environment. Minimize waste, use less energy, and recycle when these options are available. Since spring is around the corner, do you have the opportunity to ride a bike to work instead of driving? The side benefit (or possibly the primary benefit) is the exercise that you are getting.
If you are in business, are you looking at sustainability solutions? Do you want to cut your office paper waste by 25-50%? When possible, if your printers allow it, make sure everyone defaults to printing on both sides of the paper. Little things add up over time.